#BSwitch {
    position: relative;
    width: 64px;
    height:22px;
    background-image: url('back.png');
}
.switcher {
    position: relative;
    width: 64px;
    height:22px;
    left:0px;
    background-image: url('switch.png');
    transition: left 250ms ease-in 100ms;
    -o-transition: left 250ms ease-in 100ms;
    -ms-transition: left 250ms ease-in 100ms;
    -moz-transition: left 250ms ease-in 100ms;
    -khtml-transition: left 250ms ease-in 100ms;
    -webkit-transition: left 250ms ease-in 100ms;
}

